include/media/AudioIoDescriptor.h

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_AUDIO_IO_DESCRIPTOR_H
#define ANDROID_AUDIO_IO_DESCRIPTOR_H

namespace android {

enum audio_io_config_event {
    AUDIO_OUTPUT_OPENED,
    AUDIO_OUTPUT_CLOSED,
    AUDIO_OUTPUT_CONFIG_CHANGED,
    AUDIO_INPUT_OPENED,
    AUDIO_INPUT_CLOSED,
    AUDIO_INPUT_CONFIG_CHANGED,
};

// audio input/output descriptor used to cache output configurations in client process to avoid
// frequent calls through IAudioFlinger
class AudioIoDescriptor : public RefBase {
public:
    AudioIoDescriptor() :
        mSamplingRate(0), mFormat(AUDIO_FORMAT_DEFAULT), mChannelMask(AUDIO_CHANNEL_NONE),
        mFrameCount(0), mLatency(0) {}

    virtual ~AudioIoDescriptor() {}

    audio_io_handle_t mIoHandle;
    uint32_t mSamplingRate;
    audio_format_t mFormat;
    audio_channel_mask_t mChannelMask;
    size_t mFrameCount;
    uint32_t mLatency;
};


};  // namespace android

#endif  /*ANDROID_AUDIO_IO_DESCRIPTOR_H*/